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srsRAN_4G/lib/test/adt/expected_test.cc

150 lines
3.2 KiB
C++

/**
* Copyright 2013-2021 Software Radio Systems Limited
*
* This file is part of srsRAN.
*
* srsRAN is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsRAN is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#include "srsran/adt/expected.h"
#include "srsran/common/test_common.h"
int test_expected_trivial()
{
srsran::expected<int> exp;
TESTASSERT(exp.has_value());
TESTASSERT(exp);
exp = 5;
TESTASSERT(exp.has_value());
TESTASSERT(exp.value() == 5);
TESTASSERT(exp);
exp.set_error(srsran::default_error_t{});
TESTASSERT(not exp.has_value());
TESTASSERT(not exp);
int i = 2;
exp = i;
TESTASSERT(exp);
TESTASSERT(exp.value() == 2);
exp.set_error();
TESTASSERT(not exp);
exp = 3;
{
srsran::expected<int> exp2 = exp;
TESTASSERT(exp2 and exp2.value() == 3);
srsran::expected<int> exp3;
exp3 = exp2;
TESTASSERT(exp3 and exp3.value() == 3);
}
TESTASSERT(exp and exp.value() == 3);
exp.set_error();
{
srsran::expected<int> exp2{exp};
TESTASSERT(not exp2);
srsran::expected<int> exp3;
exp3 = exp;
TESTASSERT(not exp3);
}
return SRSRAN_SUCCESS;
}
struct C {
C() : val(0) { count++; }
C(int v) : val(v) { count++; }
C(const C& other)
{
val = other.val;
count++;
}
C(C&& other)
{
val = other.val;
other.val = 0;
count++;
}
~C() { count--; }
C& operator=(const C& other)
{
val = other.val;
return *this;
}
C& operator=(C&& other)
{
val = other.val;
other.val = 0;
return *this;
}
int val;
static uint32_t count;
};
uint32_t C::count = 0;
int test_expected_struct()
{
srsran::expected<C, int> exp;
exp = C{5};
TESTASSERT(exp and exp.value().val == 5);
TESTASSERT(C::count == 1);
{
auto exp2 = exp;
TESTASSERT(exp2 and exp2.value().val == 5);
TESTASSERT(C::count == 2);
}
TESTASSERT(exp and exp.value().val == 5);
TESTASSERT(C::count == 1);
{
auto exp2 = std::move(exp);
TESTASSERT(exp2 and exp2.value().val == 5);
TESTASSERT(exp and exp.value().val == 0);
}
exp.set_error(2);
TESTASSERT(not exp and exp.error() == 2);
return SRSRAN_SUCCESS;
}
int test_unique_ptr()
{
srsran::expected<std::unique_ptr<C> > exp;
TESTASSERT(exp);
exp.value().reset(new C{2});
TESTASSERT(exp.value()->val == 2);
{
auto exp2 = std::move(exp);
TESTASSERT(exp.value() == nullptr);
TESTASSERT(exp2 and exp2.value()->val == 2);
}
return SRSRAN_SUCCESS;
}
int main()
{
TESTASSERT(test_expected_trivial() == SRSRAN_SUCCESS);
TESTASSERT(test_expected_struct() == SRSRAN_SUCCESS);
TESTASSERT(test_unique_ptr() == SRSRAN_SUCCESS);
}